US9553482B2 - Lighting power supply - Google Patents

Lighting power supply Download PDF

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Publication number
US9553482B2
US9553482B2 US14/376,207 US201314376207A US9553482B2 US 9553482 B2 US9553482 B2 US 9553482B2 US 201314376207 A US201314376207 A US 201314376207A US 9553482 B2 US9553482 B2 US 9553482B2
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Prior art keywords
controller
power
bus
lighting system
mains input
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US20150008844A1 (en
Inventor
Ian Wilson
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Tridonic UK Ltd
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Tridonic UK Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes
    • H05B37/0254—
    • H05B37/0263—
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2853—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2923—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/185—Controlling the light source by remote control via power line carrier transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y10T307/625—

Definitions

  • the present invention relates to a lighting system power supply arrangement including a mains input converter operable to provide power, a controller operable to control at least one element of the lighting system, a controller bus, and a controller interface operable to provide control signals from the bus to the controller.
  • the present invention also relates to a lighting system power supply method.
  • emergency lighting is intended to be activated when the conventional lighting is no longer operative because the mains supply to the conventional lighting is no longer available or malfunctions.
  • Emergency lighting is typically powered by a battery or other energy storage device.
  • Conventional lighting is controlled by an on/off switch by means of which a user (or control system) can control whether the lighting is illuminated or not.
  • emergency lighting is intended to be automatically illuminated when the absence of mains power or the malfunction of mains power for the conventional lighting is detected in some way.
  • Emergency lighting may be used to allow escape from buildings that would otherwise be in darkness due to the inoperativeness of the conventional lighting.
  • Emergency lighting and conventional lighting may share components.
  • the same lamp such as a gas discharge lamp or LED
  • ballast may be used for both conventional and emergency lighting (“maintained mode”).
  • Other components may also be shared.
  • a lighting system comprising emergency lighting and conventional lighting may be considered to have two operating modes.
  • a normal mode when the direct mains supply is operating normally (within the normal voltage range), a switched mains input, controlled by an on/off switch, is monitored, and the lamp is illuminated or extinguished in dependence upon the switched mains input
  • an emergency mode when the mains supply is not available or is malfunctioning (is outside the normal voltage range), the lamp is illuminated automatically, irrespective of the status of the switched mains input, using power from a battery or other storage element.
  • FIG. 1 shows the basic elements of such a known lighting system, designated generally at 1 , which receives the switched mains input 3 and the direct AC mains input 5 .
  • the direct AC mains input 5 is filtered by input filter 7 (for harmonics, EMI, and power factor reasons) and rectified by rectifier 9 to which a SELV (Separated Extra Low Voltage) isolated DC-DC input converter 11 is connected
  • the lighting system further comprises a light source driver 13 (e.g. electronic ballast) and a light source 15 (e.g. LED lamp) powered by the input converter 11 .
  • a light source driver 13 e.g. electronic ballast
  • a light source 15 e.g. LED lamp
  • An electronic controller 17 controls the operation of the lighting system, including activating emergency lighting when appropriate.
  • FIG. 1 further shows a battery 19 which provides power in an emergency situation. Battery power is applied to the driver 13 and light source 15 when the controller 17 detects the failure of the mains supply 5 .
  • the same light source driver 13 is used both in the emergency mode and the normal mode to supply current to the lamp 15 in this example, although this is not essential.
  • the emergency mode is activated by the controller 17 when the direct mains input 5 is not available or malfunctions.
  • the normal mode should be activated by the controller 17 when the direct mains 5 is present and operating correctly, and in this mode the lamp 15 is illuminated when the switched mains 3 is on.
  • the voltage on the direct mains input 5 may be an AC voltage (e.g. 230V AC).
  • the controller 17 is powered by a controller supply 23 , which itself is powered by the input converter 11 .
  • the controller supply 23 may be a Low Voltage Power Supply (LVPS).
  • LVPS Low Voltage Power Supply
  • the controller 17 may be also powered from the battery 19 .
  • the input converter 11 receives the direct mains input voltage 5 and provides DC output to supply current to the light source driver 13 and battery charger 21 .
  • the switched mains input 3 is monitored either directly or indirectly by the controller 17 .
  • the controller 17 also determines whether or not the direct mains input 5 is operating normally.
  • the electronic controller 17 activates the light source driver 13 to illuminate the lamp 15 and activates the battery charger to charge the battery 19 .
  • the controller 17 When the controller 17 detects that the direct mains input 5 is not normal (emergency mode), the controller 17 activates the light source driver 13 using power from the battery 19 to illuminate the lamp 15 (irrespective of the status of the switched mains input 3 ).
  • the electronic controller 17 may operate the light source driver 13 in a different manner to the emergency mode.
  • the controller 17 may determine the status of the switched live input 3 in any suitable manner. For example, it is known to apply the switched mains input 3 to a potential divider, and then to a voltage threshold detector with an isolation circuit, such as an opto-coupler. Typically, the mains input 3 is rectified by a rectifier before being applied to the voltage threshold detector and the isolation circuit. When the switched live input 3 is on, the output of the isolation circuit will be a pulsed signal, the presence of which can be detected by logic within the controller 17 . When the switched live 3 input is off, the output of the isolation circuit will be a constant value (zero volts) and this can also be detected by logic of the controller 17 .
  • the controller 17 then operates the driver 13 and lamp 15 in accordance with the state of the switched mains input 3 .
  • the signal on the switched live input 3 which is interpreted as signal for the status of the emergency mode may have different shapes or states, depending on the definition of the system. A signal of zero volts as described above is just an example.
  • the lighting system 1 may comprise an interface 25 , e.g. a DALI (Digital
  • Low levels are set as voltage differences of less than 6.5V down to ⁇ 6.5V (either positive or negative). According to the protocol the current supply for the DALI communication has to be limited to 250 mA.
  • the controller 17 may put the driver 13 into different operation modes, e.g. to illuminate the lamp 15 at a given intensity level.
  • the different types of operation depending on the type of detected mains voltage may be also programmed in the controller 17 and may be changed (e.g. by the DALI controller) through an interface (e.g. DALI interface).
  • the dimming range can be limited due to the detected type of mains voltage or a certain dimming level can be selected (e.g. in emergency mode).
  • the lighting system may additionally include a test switch (to exercise auto-test routines) and a status indicator LED 29 , connected to the controller 17 .
  • controller 17 It is desirable that the controller 17 is continuously powered. If the controller 17 does not receive power it will shut down and it will not be possible for the controller 17 to react to input signals in order to provide the desired illumination of the lamp 15 .
  • Such input signals may include the switched live input 3 , instructions from the DALI interface 25 and operation of test switch 27 .
  • the controller 17 if deactivated, will also not be able to perform mains detection to determine whether the AC mains supply 5 is present and operating as normal, and so will not be able to detect an emergency situation and illuminate the lamp 15 in an emergency mode.
  • the controller 17 When the direct mains input 5 fails or malfunctions, the controller 17 is powered by the battery 19 . Initially, the battery 19 may be able to provide sufficient power to operate the controller 17 . In emergency situations, current being drawn from the battery 19 after a discharge event (emergency mode occurrence during which the lamp 15 has been illuminated by battery power) may be limited to very low levels whilst the direct mains input is not present (or is malfunctioning). The quiescent current from the battery 19 may be at a very low level (for example less than 100 ⁇ A). A battery of the nickel metal hydride (NiMh) type or a battery of a different type having a sensitive chemistry has a limited current output.
  • NiMh nickel metal hydride
  • the lighting system 1 may have a “rest mode” which enables, for example, the emergency lighting to be switched off during a mains failure after a time when the premises have been fully evacuated. This prevents full discharge of the battery 19 by constant illumination of a lamp 15 when this is no longer necessary. This assists reoccupation of the premises because it stops full discharge of batteries.
  • the “rest mode” the amount of power available from a battery 19 can reach a very low level as the “rest mode” can last long periods where no recharge happens and the battery slowly discharges through parasitics and self-discharge.
  • auxiliary power supply for a lighting system.
  • Such an auxiliary power supply may, for example, be used to power the controller 17 so that the controller can remain operative when the current available from the battery 19 is significantly diminished.
  • the object of the invention is to provide an auxiliary power supply for general use in a lighting system, and not just for powering a controller like the controller 17 described above.
  • the present invention provides a lighting system power supply arrangement including a mains input converter operable to provide power, a controller operable to control at least one element of the lighting system, a controller bus, and a controller interface operable to provide control signals from the bus to the lighting system, characterised by an auxiliary converter operable to power the lighting system from the bus.
  • the mains input converter is operable to provide power to one or more elements of the lighting system.
  • the mains input converter may provide power to a lamp, such as an LED or fluorescent lamp (or any other type of lamp).
  • the mains input converter may additionally, or alternatively, charge an energy storage device such as a battery. The charging may be performed via a battery charger. Further, the mains input converter may additionally, or alternatively, power the controller.
  • the lighting system may comprise a lamp that is illuminated when mains power is available and operating correctly. When mains power is absent, or malfunctions, the lighting system may provide emergency lighting using the same or a different lamp.
  • the controller may control the operation of the lamp in dependence upon the control signals received from a central controller via the controller bus.
  • a central controller may control a multiplicity of lighting systems.
  • the controller bus may carry power for the purpose of conveying the control signals. This is the conventional purpose of the power in a controller bus.
  • the auxiliary converter is operable to use this power advantageously to power the controller from the bus. This provides an additional source of power for the controller. This is advantageous when the mains power is absent and/or when the power of the energy storage device/battery is required to be persevered or is depleted (or for any other reason).
  • the auxiliary converter may additionally, or alternatively, be operable to provide power to one or more elements of the lighting system, e.g. charge an energy storage device such as a battery.
  • the controller bus may be a DALI bus and the controller interface may be a DALI interface.
  • the DALI standard is specified in IEC 60929 as well as in IEC 62386, which are hereby fully incorporated by reference.
  • the DALI bus and DALI interface allow control of the lighting system from an appropriately configured central controller.
  • the DALI bus is only one example for a bus system with active high transmission. Such active high transmission is characterized by the feature that there is a voltage level above zero when no data is transmitted. The invention can be applied to such bus systems with active high transmission.
  • the auxiliary converter may power the lighting system at any time, but may particularly advantageously do so when the mains input is outside normal operating values. Whether the mains input is outside normal values or not may be determined by the controller using a suitable monitoring circuit.
  • the auxiliary converter is preferably an isolated DC-DC converter.
  • controller bus e.g. DALI bus
  • lighting system circuit e.g. lamp ballast, LED driver, battery etc.
  • controller bus e.g. DALI bus
  • lighting system controller including a micro controller and its circuitry
  • controller bus e.g. DALI bus
  • the present invention provides a lighting system power supply method as defined in the claims.
  • FIG. 1 shows the basic elements of a known lighting control system which can be powered by either an AC mains input or a DC input from a battery;
  • FIG. 2 shows a first embodiment to the invention which includes the elements of FIG. 1 and additionally includes an auxiliary converter for making power available from the controller bus (DALI bus) to the controller; and
  • DALI bus controller bus
  • FIGS. 3 to 6 show circuits in which the auxiliary converter is implemented.
  • the power from the DALI bus 26 is used to power the lighting system controller 17 , particularly when the direct AC mains input 5 is interrupted (or malfunctions), and further particularly when battery 19 is discharged (completely or partially).
  • the DALI bus 26 By providing power from the DALI bus 26 to supply the controller 17 , it is possible to lower the amount of power drawn from the battery 19 and/or avoid too high quiescent currents leaking from the battery 19 in low power states when there is a maximum allowed discharged current limit.
  • the amount of power taken from the battery 19 can be lowered and thus the depletion of the battery 19 can be slowed down.
  • the isolated DC-DC converter 43 provides electrical isolation between the DALI bus 26 and the rest of the lighting system 1 .
  • circuit options are possible to implement this feature. Examples given below use fly back and forward converters. However, it should be understood that any circuit capable of providing energy transfer from the DALI bus 26 to the rest of the lighting circuit 1 may be used in accordance with the principles of the invention.
  • the embodiments of the present invention by using power available from the DALI bus 26 , allow elements of the lighting system 1 to be powered even when the direct AC mains input 5 is interrupted (or malfunctions) and the battery 19 is discharged or otherwise unable to provide the required power.
  • the DALI bus 26 provides a convenient already existing source of power that can be used advantageously, in accordance with the embodiments, additionally to power other elements of the lighting system 1 .
  • the alternative would be to provide power from a new, external source, with additional costs and complexity.
  • Power from the DALI bus 26 may be drawn in response to the lighting system 1 entering a rest-mode, in order to reduce the so called ‘stand-by losses’. Also in case where the light is off the lamp driver should advantageously draw no power from the mains voltage input 5 (in this case, the battery charging from the mains voltage input 5 would increase the stand-by power consumption). When power is drawn from the DALI bus 26 this lowers the amount of power drawn from the mains voltage input 5 and thereby the so called ‘stand-by losses’ can be lowered.
  • Additional triggers for taking power from the DALI bus 26 may be the following.
  • the internal low voltage power supply 23 for the controller 17 may be coupled to the driver 13 , this low voltage power supply would be deactivated as well when the lamp 15 is off.
  • the DALI bus 26 might be powered by a battery backed up system
  • powering of the battery by the DALI bus 26 would be also an advantage.
  • FIG. 3 An isolated off battery DC-DC converter with an inductor-less forward converter circuit is shown in FIG. 3 .
  • the circuit is connected on the input side to the DALI bus 26 via bridge rectifier 40 across which capacitor C 1 is connected in order to provide power.
  • the circuit includes the isolated DC-DC auxiliary converter 43 and the battery 19 .
  • the auxiliary converter 43 is constituted, in this example, by a so-called forward converter which exhibits, on the one hand, a transformer T with a primary winding N 1 and a secondary winding N 2 and also, on the other hand, a controllable switch S 1 which is controlled by a PWM (Pulse Width Modulation) driver 42 .
  • PWM Pulse Width Modulation
  • the battery rail represents the charging rail of the battery 19 .
  • the MOSFET switch 46 represents the reverse battery switch protection usually present in emergency applications.
  • the LVPS 23 of the control circuitry (usually comprising a microcontroller and resistor dividers, etc.) is connected to this rail.
  • the LVPS 23 is responsible for supplying the controller 17 and may be just a linear regulator or another DC-DC converter such as buck, boost, buck-boost, SEPIC (Single-Ended Primary Inductor Converter), etc.
  • buck boost
  • buck-boost SEPIC (Single-Ended Primary Inductor Converter)
  • energy from the DALI bus 26 is used to keep the controller 17 in operation.
  • the rectifier 40 (D 1 - 4 ) as a full wave rectifier rectifies the DALI bus voltage and thus makes the circuit insensitive to the polarity of the wiring. Resistor RI can be inserted to limit rush current of Cl.
  • the DC-DC isolated converter 43 is connected to the DC rail from rectified DALI bus 26 , to transfer power to the emergency control circuitry (LVPS 23 and controller 17 ).
  • the forward converter 43 of FIG. 3 can be driven either from the primary winding N 1 or from the secondary winding N 2 or even with some feed-back using an opto-coupler. By operating the switch S 1 , the transformer T is charged from DALI DC rail and discharged to the battery rail.
  • FIG. 4 also shows the LVPS implementation with an inductor-less forward converter but changes the representation of the battery charging.
  • the difference between FIGS. 3 and 4 is the connection of the battery 19 .
  • a linear regulator 52 is used for interruption and control of the battery current
  • a switched system is used (regulation of the current can be done by high frequency switching of switch 46 , also a part of a switched converter).
  • FIGS. 3 and 4 An alternative to the FIGS. 3 and 4 arrangements is to use a flyback converter, as shown in FIGS. 5 and 6 , where current regulation can be obtained just with the transformer, but not voltage regulation.
  • a simple PWM IC with feed-back is able to perform such voltage regulation easily either from the secondary winding L S2 via an opto-coupler or from primary winding L P by sensing the reflected voltage in the transformer T. (Both flyback and forward can be implemented with primary or secondary control. The microcontroller and/or an opto-coupler are able to perform secondary control.)
  • the isolated off-DALI LVPS auxiliary converter circuit of FIG. 5 is connected on the input side to the DALI bus 26 via bridge rectifier 40 , across which capacitor C 1 is connected in order to provide power.
  • the circuit includes a control unit 42 A, the isolated DC-DC converter 43 and the battery 19 .
  • Triggering of the controllable switch S 1 is undertaken by the control unit 42 A.
  • the auxiliary converter 43 can provide power to the controller supply 23 from the DALI bus 26 in order to provide power to the controller 17 .
  • the controller supply 23 is also coupled to the battery 19 via diode D 6 (which is charged by charger rail 44 of the battery charger 21 when AC mains power is available).
  • FIG. 6 shows an arrangement similar to that of FIG. 5 but showing the battery 19 connected to the DC rail 50 of the converter 11 via a (linear) current regulator 52 .
  • FIGS. 3 to 6 show examples of auxiliary converter types.
  • Other auxiliary converter types are also applicable to the invention, such as half-bridge, full-bridge, push-pull, SEPIC, Cuk, Zeta, etc.
  • the auxiliary converter is an isolated converter to provide (galvanic) isolation of the interface 25 and bus 26 from the rest of the lighting system 1 .
  • the auxiliary converter provides primary and/or secondary control (regulation) of voltage and/or current. The regulation may be performed by an opto-transistor and/or by the controller 17 and/or by a PWM chip ( 42 , 42 A) or any discrete or integrated circuit.
  • the auxiliary converter can optionally be integrated into the DALI interface 25 which is used for communication of the controller 17 with the bus 26 .
  • This may be for instance the case where a transformer is used for transmission of the data from and to the bus 26 .
  • Such transformer may be switched with high frequency and may have several output windings which may be used for out coupling of data and/or power.
US14/376,207 2012-02-03 2013-02-01 Lighting power supply Active US9553482B2 (en)

Applications Claiming Priority (3)

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GB1201901.4 2012-02-03
GB1201901.4A GB2499016B (en) 2012-02-03 2012-02-03 Lighting power supply
PCT/EP2013/052062 WO2013113888A1 (en) 2012-02-03 2013-02-01 Lighting power supply

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US20150008844A1 US20150008844A1 (en) 2015-01-08
US9553482B2 true US9553482B2 (en) 2017-01-24

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US (1) US9553482B2 (zh)
EP (1) EP2810535B1 (zh)
CN (1) CN104081881B (zh)
GB (1) GB2499016B (zh)
WO (1) WO2013113888A1 (zh)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9137866B2 (en) * 2011-12-12 2015-09-15 Cree, Inc. Emergency lighting conversion for LED strings
US9560703B2 (en) 2011-12-12 2017-01-31 Cree, Inc. Dimming control for emergency lighting systems
US10117295B2 (en) 2013-01-24 2018-10-30 Cree, Inc. LED lighting apparatus for use with AC-output lighting ballasts
US9871404B2 (en) 2011-12-12 2018-01-16 Cree, Inc. Emergency lighting devices with LED strings
DE102012214832A1 (de) 2012-08-21 2014-02-27 Tridonic Uk Ltd. Notlichtgerät mit Potentialtrennung zwischen Leuchtmittel und Energiespeicher
US9439249B2 (en) 2013-01-24 2016-09-06 Cree, Inc. LED lighting apparatus for use with AC-output lighting ballasts
US10104723B2 (en) 2013-01-24 2018-10-16 Cree, Inc. Solid-state lighting apparatus with filament imitation for use with florescent ballasts
DE102013219153A1 (de) * 2013-09-24 2015-04-09 Tridonic Gmbh & Co Kg Treibermodul mit sekundärseitiger Erkennung einer primärseitigen elektrischen Versorgung
US10636290B2 (en) * 2014-03-25 2020-04-28 Osram Sylvania Inc. Communication interface device for a solid-state luminaire
CN104202862B (zh) * 2014-07-30 2017-02-01 南京航空航天大学 一种单级式无电解电容led驱动电源
GB2535808B (en) 2015-02-25 2021-08-25 Tridonic Gmbh & Co Kg Voltage supply unit and method for operating a light source
CA2982747C (en) * 2015-04-16 2024-03-12 Hubbell Incorporated Emergency dimming apparatus
WO2016168876A1 (de) * 2015-04-22 2016-10-27 Tridonic Gmbh & Co Kg Schnittstellenschaltung mit niedervoltversorgung für eine steuereinheit
DE102015207308A1 (de) * 2015-04-22 2016-10-27 Tridonic Gmbh & Co Kg Schnittstellenschaltung mit Niedervoltversorgung für eine Steuereinheit
GB2544562A (en) * 2015-11-23 2017-05-24 Hanslod Mohamed LED light fitting and emergency power supply therefor
WO2017089120A1 (en) * 2015-11-26 2017-06-01 Philips Lighting Holding B.V. A driver circuit
US10251225B2 (en) * 2015-12-28 2019-04-02 Eaton Intelligent Power Limited Multi-mode power supply for an LED illumination device
US9627927B1 (en) * 2016-06-16 2017-04-18 Litetronics International, Inc. Emergency power module and method for providing emergency power
CN105953107B (zh) 2016-07-22 2019-07-09 厦门普为光电科技有限公司 具有信号切换模式的发光二极管应急灯及其操作方法
CN109644534B (zh) * 2016-08-29 2022-01-28 昕诺飞控股有限公司 对用于传感器就绪led驱动器的隔离的辅助电源和dali电源的控制
CN109863834B (zh) * 2016-10-28 2022-04-19 昕诺飞控股有限公司 通信接口和装置
GB2563679B (en) * 2017-06-19 2022-07-06 Tridonic Gmbh & Co Kg Emergency converter output switching
GB2563680B (en) * 2017-06-19 2022-06-01 Tridonic Gmbh & Co Kg Driver for emergency lighting
US10824427B2 (en) 2017-10-25 2020-11-03 Nicor, Inc. Method and system for power supply control
WO2019144373A1 (en) * 2018-01-26 2019-08-01 Tridonic Gmbh & Co Kg Dali circuit, controlling method and equipment
IT201800005720A1 (it) * 2018-05-25 2019-11-25 Dispositivo alimentatore elettrico per dispositivi di illuminazione con controllo mediante interfaccia dali
US10602590B1 (en) * 2018-10-23 2020-03-24 Abl Ip Holding Llc Isolation of digital signals in a lighting control transceiver
EP3657911B1 (en) 2018-11-22 2021-03-03 Tridonic GmbH & Co. KG Dynamic current limitation for dali power supply
CN209930590U (zh) * 2018-12-04 2020-01-10 惠阳帝宇工业有限公司 一种可短距离无线配置参数的应急控制灯具
EP3664581B1 (en) 2018-12-05 2023-02-01 Tridonic GmbH & Co. KG Dali control device
DE102019110666B3 (de) * 2019-04-25 2020-08-27 Vossloh-Schwabe Deutschland Gmbh Betriebsschaltung und Verfahren zum Betreiben wenigstens eines Geräts an einer Busleitung
CN110707805A (zh) * 2019-10-18 2020-01-17 华荣科技股份有限公司 一种航行灯控制系统
EP3907852A1 (en) * 2020-05-06 2021-11-10 Tridonic GmbH & Co. KG An emergency driver for supplying emergency lighting means
CN112198830A (zh) * 2020-10-30 2021-01-08 姜金友 一种直流应急疏散照明集中控制电源系统
US11019708B1 (en) * 2020-11-23 2021-05-25 Ubicquia Llc High-power DALI

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365231A (en) 2000-06-27 2002-02-13 Paul Mans Method and apparatus for the control of lighting circuits
EP1578176A2 (en) 2004-03-19 2005-09-21 Beghelli S.p.A. Integrated system for the diagnosis and controlling of fluorescent lamps
US20060125426A1 (en) * 2004-12-14 2006-06-15 Dragan Veskovic Distributed intelligence ballast system and extended lighting control protocol
US20060202851A1 (en) * 2005-03-12 2006-09-14 Cash Audwin W Handheld programmer for lighting control system
US20070273307A1 (en) * 2006-05-26 2007-11-29 Westrick Rich L Distributed Intelligence Automated Lighting Systems and Methods
US20080179968A1 (en) 2007-01-29 2008-07-31 Fifth Light Technology Ltd. Addressable power switch
DE102008017557A1 (de) 2008-03-25 2009-10-01 Tridonicatco Gmbh & Co. Kg Betriebsgerät für Leuchtmittel
US20110080102A1 (en) * 2009-10-01 2011-04-07 Liangan Ge High efficiency constant current led driver
US20110210681A1 (en) * 2008-11-05 2011-09-01 Tridonic Gmbh And Co Kg Illuminant operating appliance with potential separation
US20110222314A1 (en) * 2010-03-12 2011-09-15 Richtek Technology Corp. Power supply with reduced power consumption
WO2011124721A1 (de) 2010-04-09 2011-10-13 Tridonic Gmbh & Co Kg Modulares led-beleuchtungssystem mit notlichtfunktion
WO2012174328A2 (en) 2011-06-15 2012-12-20 Osram Sylvania Inc. Systems and methods to detect bus network fault and topology
WO2012174319A1 (en) 2011-06-15 2012-12-20 Osram Sylvania Inc. System bus with variable output power supply

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365231A (en) 2000-06-27 2002-02-13 Paul Mans Method and apparatus for the control of lighting circuits
EP1578176A2 (en) 2004-03-19 2005-09-21 Beghelli S.p.A. Integrated system for the diagnosis and controlling of fluorescent lamps
US20060125426A1 (en) * 2004-12-14 2006-06-15 Dragan Veskovic Distributed intelligence ballast system and extended lighting control protocol
US20060202851A1 (en) * 2005-03-12 2006-09-14 Cash Audwin W Handheld programmer for lighting control system
US20070273307A1 (en) * 2006-05-26 2007-11-29 Westrick Rich L Distributed Intelligence Automated Lighting Systems and Methods
US20080179968A1 (en) 2007-01-29 2008-07-31 Fifth Light Technology Ltd. Addressable power switch
DE102008017557A1 (de) 2008-03-25 2009-10-01 Tridonicatco Gmbh & Co. Kg Betriebsgerät für Leuchtmittel
US20110210681A1 (en) * 2008-11-05 2011-09-01 Tridonic Gmbh And Co Kg Illuminant operating appliance with potential separation
US20110080102A1 (en) * 2009-10-01 2011-04-07 Liangan Ge High efficiency constant current led driver
US20110222314A1 (en) * 2010-03-12 2011-09-15 Richtek Technology Corp. Power supply with reduced power consumption
WO2011124721A1 (de) 2010-04-09 2011-10-13 Tridonic Gmbh & Co Kg Modulares led-beleuchtungssystem mit notlichtfunktion
WO2012174328A2 (en) 2011-06-15 2012-12-20 Osram Sylvania Inc. Systems and methods to detect bus network fault and topology
WO2012174319A1 (en) 2011-06-15 2012-12-20 Osram Sylvania Inc. System bus with variable output power supply

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US20150008844A1 (en) 2015-01-08
GB201201901D0 (en) 2012-03-21
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GB2499016B (en) 2016-08-03

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